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I've got a faulty AC adapter...

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#1 OvRboard


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Posted 01 July 2013 - 10:33 PM

...again. When I plug it into my laptop, I get an annotation telling me that the adapter's not recognized, and it will run the thing, but the battery doesn't charge, and performance takes a massive hit. The strange thing, though, is that it performs fine with no charger at all. I can charge the battery with a friend's cord, so it's not my laptop, and it worked fine when I got it, so I know it's the right kind, it just stopped working properly after a couple months of use, despite having no visible damage.


If this were the first time I'd just buy another adapter, but this is an issue I have consistently, so I'm thinking it's time for something else. Can anyone here recommend me to an outside party adapter that would be compatible with a Dell XPS 17 laptop, or possibly, as a short-term solution, a software I could use to manually signal the computer that I'm using the right kind of power cord? I've tried a universal charger before as well, and that ended up causing the same problems, but right out of the box rather than after using it for awhile.

Edited by hamluis, 02 July 2013 - 08:38 AM.
Moved from Win 7 to External Hardware - Hamluis.

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#2 noknojon


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Posted 01 July 2013 - 10:49 PM

Hello -

A few listed items From Walmart
How old is your adapter and battery ? Were they purchased / supplied together ?

Thanks -

#3 dc3


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Posted 01 July 2013 - 11:13 PM

If you look on the adapter you will see the secondary voltage, this will appear in DC Volts, it should be 19.5V.  Take a multimeter with a DC voltage scale and see that the adapter is producing the proper voltage.  If it is, then I would look at the plugin connection.  These are notorious on laptops for becoming loose or completely failing.

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#4 OvRboard

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Posted 02 July 2013 - 03:01 PM

The adapter is indeed a 19.5v. It's not the one that was supplied with the battery, but it's the same model. Battery and connection should be fine seeing as it worked when I tested it with a friend's cord. I'm thinking the identification wire in the charger itself probably disconnected, it's a problem I've experienced before and one that's apparently not uncommon, but I don't have the ability to fix it myself. I'll take a look at the Denaqs, thanks for your responses.

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